Lingering Will Level 1 Critical Mode Speedrun KH2FM (Beserker Charge strat)
This hurt my hand a lot.
Basically Horizontal Slash has stunlock properties, but only if every input is near frame perfect. I believe it's about a 3-5 frame window. With Berserk Charge, you can keep it going for ages, long as you're in MP Charge.
As overpowered as this is, pulling it off consistently is very hard to do.
Used the BGM mute code and added in the HD Remix version of Rage Awakened.
Also I forgot to unequip one of the accessories that gives MP Haste, thankfully it didn't screw me over.